[PATCH] D23032: Rewrite the use optimizer to be less memory intensive and 50% faster.Fixes PR28670

[George Burgess IV via llvm-commits]

george.burgess.iv accepted this revision.
george.burgess.iv added a comment.
This revision is now accepted and ready to land.

LGTM; thanks again.


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Comment at: lib/Transforms/Utils/MemorySSA.cpp:1226
@@ +1225,3 @@
+  // Pop everything that doesn't dominate the current block off the stack,
+  // increment the PopEpoch to account for this.
+  while (!VersionStack.empty()) {
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Yay for fast domtree ops!


https://reviews.llvm.org/D23032